A blow-off valve is undoubtedly necessary for a turbocharged engine.
Therefore, it is essential to choose the best BOV for WRX as it not only produces loud sound but also helps protect the engine.
Although the blow-off valve is usually linked to the loud turbo sound produced by the vehicles, it is not its only function.
It is also responsible for ensuring that your car’s engine is safe and is working fine. Therefore, if you are looking for the finest blow off-valve WRX, we are here to help you through the process.
What is the best WRX blow-off valve?
You can find a variety of blow-off valves available in the market, but you are mistaken if you think that all of them are high-performance.
So, to help you in the choosing process, we have listed below some of the best WRX blow-off valves:
- Turbosmart blow valve Subaru is the best WRX blow off valve.
While some other good ones include:
- Turbo-08-12-WRX-Blow-Valve
- Boomba racing
- Kompact-Plumb-Subaru
- Turbosmart TS-0203-1061 Blow-Off Valve
- GReddy (11501665) Blow-Off Valve
Why is “Turbosmart” the best Subaru WRX blow-off valve?
Turbosmart Subaru WRX blow off valve is one of the best in the market due to its durability and efficient performance features.
This recirculating bypass valve is made out of aircraft-grade billet aluminum with great accuracy and precision. The design of this blow-off valve is an internal brass piston design.
It has been tested and proven to bear a pressure of around 75psi. These optimum features and high-pressure resistance makes it excellent for the most aggressive turbo builds.
This is why Turbosmart is referred to as the best Subaru blow-off valve in the market.
The 10 Best BOV for WRX Review 2022: Best Aftermarket Blow Off Valves
01. Turbosmart Compact BOV for the Subaru WRX- Cost Worthy
Highlighted Features
- OEM replacement
- Weighs 15.2 ounces
- High compatibility
- No folding
- Made in Australia
If you are looking for an efficient OEM replacement, you might not want to miss this one.
Turbosmart TS-0203-1209 is the best blow off valve WRX and is compatible with a couple of other vehicles and models.
It is a fully recirculating blow-off valve with all the enhanced features you might look for in your new blow-off valve. It is an OEM-type fitment replacement that offers a superior flow of air or pressure.
So, if these qualities intrigue you at all, you should not waste any time and get your perfect OEM blow off valve now.
Turbosmart is a reliable brand that has always promised to offer the best automobile replacement parts in the market for quite a time now.
Therefore, the quality of products that they manufacture has proven over time.
This Turbosmart blow-off valve works by efficiently recirculating all of the excessive pressure back into the intake system and not in the outer atmosphere.
It doesn’t have any aggressive sound, and it is ideal for drivers who want to benefit from the blow-off valve but do not want any attention drawn towards them.
Also, it is compatible with Subaru Legacy/Liberty GT, Forester XT MY08-current, Mazda speed (MPS) 3, 6, and WRX MY08-current.
Pros
- Quieter than other valves
- Not suitable for legacy type motor setup
- Easy installation
- Suits various vehicles and models
- Recirculating valve
cons
- Not suitable for legacy type motor setup
02. Turbosmart Plumb Back Blow Off Valve for Subaru- Good Choice
Highlighted Features
- Dimensions (7 x 6 x 3 inches)
- OEM replacement
- Weighs 1 pound
- Made in Australia
- No folding
Turbosmart is a well-known and reliable brand famous for its OEM replacement, and it is also a viable option with its high-performance features and optimum construction.
It is an OEM-type fitment that is versatile and will also help improve the performance of your vehicle’s engine efficiently.
Moreover, this is a fully recirculating blow-off valve that recirculates all the excessive pressure into the intake system.
Like most other Turbosmart blow-off valves, it is also known for its quieter sound yet quality performance.
Therefore, if you are willing to enjoy the benefits of a high-performance blow-off valve without getting noticed by the loud sound produced by most of them, you will have to consider this option.
In addition to the quality features mentioned above, this is a suitable blow-off valve that offers a superior flow.
Also, one of the most prominent features of this valve is that it provides greater structural integrity under the boost.
This high-quality valve is suitable for a couple of vehicles and models, including Forester 05-07, WRX MY01-MY07, and STi MY01-08.
Therefore, if you are looking for a high-performance blow-off valve that fits the vehicle mentioned above, you might need to get this one as soon as possible to enjoy its quality performance.
Pros
- Holds boost better
- Ideal sound
- Easy installation
- High quality
Cons
- Requires aftermarket air intake
03. Boomba Racing BOV for Subaru WRX- Best Choice
Highlighted Features
- Dimensions (4 x 4 x 5 inches)
- Aluminum and brass material
- Brass exterior
- Weighs 10.5 ounces
- 70 psi pressure bearing
Undoubtedly, Boomba is a trustworthy manufacturer that has always provided superior quality and high-performance products.
Therefore, this is considered one of the best WRX blow off valves available in the market due to its optimum construction and features.
Like any other Boomba racing blow-off valve, this one also is a precision machine that is constructed out of aircraft-grade billet aluminium.
With this advanced and reliable construction, this blow-off valve offers high performance and more excellent durability.
Such durability, stability and performance are what is the dream of every turbocharged engine owner.
Along with excellent construction, this Boomba racing 2015+ Subaru WRX BOV also has some other prominent features.
One of the most notable features of this valve is its capacity to withhold around 70 psi of pressure. This is ensured by its efficient internal brass piston design.
Moreover, it features a spring pre-load responsible for determining the pressure differential required across the piston before the BOV officially starts working.
Along with all these valuable features, this blow-off valve also has a 100% recirculating rate that makes it a viable option.
Also, you don’t have to worry about the installation as it doesn’t require much of your effort with its easy and convenient installation.
Pros
- Fine flutter sound
- Ideal fit
- DIY installation procedure
- Enhances turbo stability
Cons
- Not very loud
04. Armox Car Bolt-On Blow Off Valve for WRX- User’s Choice
Highlighted Features
- Dimensions (94 x 3.94 x 3.94 inches)
- Aluminum alloy material
- Blue color
- Weighs 441 g
- Suits Subaru Impreza WRX
While browsing through Subaru blow-off valves, you will surely come across this one as it is specifically designed and built to fit in various Subaru Impreza models along with Subaru Forester.
With its superior construction and delicate features, this one might be one of the best options that you will have in the market.
This blow-off valve is constructed of strong and durable material that ensures high performance and the product’s long life.
It is made out of aluminum alloy material that is well known for its corrosion resistance property thus is reliable for extended use.
Moreover, its ideal qualities are not limited to its durability alone, ensuring enhanced performance.
It efficiently improves the reaction of the turbine along with increasing the torsion of the blow-off valve. With its high performance, it also helps to enhance the service life of turbo engines.
Also, this blow-off valve works flexibly by eliminating the surge in case the throttle gets closed immediately.
It effectively reduces the air pressure by releasing the air into the atmosphere to avoid the compressor going into the surge.
Pros
- Decent sound
- Durable and corrosion-resistant
- Explicitly designed for Subaru
- Improves turbine reaction
Cons
- Difficult installation
05. Go-Fast-Bits BOV for Subaru WRX/Forester XT
Highlighted Features
- Dimensions (6.3 x 6.1 x 3.5 inches)
- Weighs 3 pounds
- No folding
- 100% recirculating valve
- Direct replacement
This blow-off valve is undoubtedly one of the best WRX blow off valves that is an excellent option with its high-quality build and optimum features.
This blow-off valve is a direct replacement and comes with a bolt-on installation. This means that it doesn’t require any modifications or additional adaptors or parts.
Therefore, it promises an easy installation with high performance.
This blow-off valve is a 100% recirculating valve, but it can be converted into one with 100% atmospheric venting with the help of a simple add-on kit.
Also, if you want an aggressive sound, you should go for a conversion kit, while if you want a noiseless blow-off valve, get yourself a Recirc model of this blow-off valve.
Along with all the ideal features mentioned above, this Go Fast Bits blow off valve has certain other quality performance features.
One of the most prominent performance features of this blow-off valve is that it can hold unlimited boosts.
Moreover, as this valve is built with TMS technology, this valve promises maximum throttle response. All these ideal qualities and features make this blow-off valve one of the best ones available in the market.
Pros
- Premium quality
- Perfect replacement
- Fast and precise throttle response
- Sounds nice
Cons
- A little complex installation
06. Turbo XS Heavy-duty BOV for Subaru Impreza WRX STI
Highlighted Features
- Dimensions (8 x 6 x 6 inches)
- Weighs 1.5 pounds
- The loudest valve at 115 dB at 15 psi
- Completely bolt-on
- No adapter kit needed
Turbo XS 08-12 WRX RFL is an atmospheric blow-off valve with high-quality construction and enhanced qualities and features.
All these features make it one of the best blow off valves available in the market for your WRX. Moreover, it has a loud, aggressive sound that many turbocharged engine drivers prefer.
Therefore, if you want this loud sound for your vehicle’s engine, this might be the ideal option for you.
Undoubtedly, this is one of the most piercing blow off valves in the market at 115 dB at 15 psi. Also, it has a polished finish that adds to the overall visual experience of the blow-off valve.
Along with all the qualities mentioned above, this Turbo blow off valve is not just limited to the aesthetic visual appearance and loud sound but also provides high performance.
One of the most prominent performance features of this blow of valve is its ability to enhance the system’s functionality in case of high running boost pressures.
Also, these valves are specifically designed to work for street applications and race engines.
To add to your convenience, this blow-off valve comes with an easy bolt-on installation that makes it convenient for you to do it independently.
Therefore, if you were looking for a blow-off valve with all these mentioned features, what are you waiting for now? Give your turbocharged engine a treat with this valve.
Pros
- High-quality and durable
- Bolt-on installation
- Oudest sound
- Aesthetic appearance
Cons
- It might be too loud
07. Sunluway Blow-off Valve for WRX STI 2015-2020
Highlighted Features
- Dimensions (5.12 x 4.41 x 3.15 inches)
- Weighs 14.9 ounces
- Brass material
- Maximum pressure 75 psi
- 100% recirculating
Sunluway BPV/Blow-off valves are one of the finest Subaru blow-off valves available in the market that have reliable, high-quality construction and high-performance features.
This blow-off valve is a 100% recirculating valve with durable construction.
As it is made out of high-grade billet aluminum coated with red anti-corrosion layers, this blow-off valve ensures a longer lifespan than most of the blow-off valves available in the market.
Moreover, it has an internal brass piston design that also adds to the durability and performance of the blow-off valve.
In addition to high-quality corrosion resistance construction, this Sunluway blow-off valve can withstand a maximum pressure of around 75 psi.
Also, it is a direct replacement for OEM bypass valves and features a very convenient installation.
Along with providing an excellent and unique flutter sound, it also helps improve the boost response. Moreover, it also helps your vehicle to build a boost quicker than usual.
Also, this blow-off valve is highly compatible and can fit Subaru 2015-2017 WRX/10-14 Legacy/Outback/14+ Forester, and 2015+ Subaru WRX / 2014+ Forester XT.
All these optimum features and ideal qualities make sure that you have your hands on the best blow-off valve that will fulfil all your requirements efficiently.
Pros
- Durable and corrosion-resistant
- Easy installation
- Unique fluttering sound
- High compatibility
Cons
- Might be too loud
08. Sunluway Combo Pack BPV/Blow-off Valve for WRX
Highlighted Features
- Dimensions (3.7 x 3.6 x 2.5 inches)
- Weighs 11.2 ounces
- Brass material
- 100% recirculating
- Maximum pressure 75 psi
Sunluway offers some of the best blow-off valves in the market that stand out from the others not only in their quality but performance as well.
It is a 100% recirculating blow-off valve that is made out of high-grade billet aluminium that is coated with black coatings.
This construction provides durability to the system as it offers corrosion-resistant properties. Moreover, it has an internal brass piston design that adds to the quality of this blow-off valve.
Also, this one can bear a maximum pressure of approximately 75 psi.
Along with high-quality, durable construction, this blow-off valve-like any other Sunluway blow-off valve, has enhanced performance features as well.
As it is a direct replacement, it doesn’t require any re-tune or additional adapters. All these factors also contribute to an easy installation without any inconvenience.
It can efficiently help speed up the building time of the booster and maintain it effectively. Also, it enhances the boost response and provides an excellent flutter sound that you want.
It is compatible with 2015+ Subaru WRX / 2014+, Forester XT, Subaru 2015-2017 WRX/10-14 Legacy/Outback/14+ Forester.
Pros
- Durable and corrosion-resistant
- Convenient installation
- Unique fluttering sound
- High-pressure resistance
Cons
- Limited compatibility
What is a blow-off valve?
A blow-off valve, also called the compressor bypass valve or dump valve, is an essential component of turbocharged engines.
It is a pressure release system and is responsible for taking off the load or pressure from the turbocharger if the throttle gets immediately closed.
These valves are responsible for preventing the compressor surge.
What do blow off valves do?
The blow-off valves are linked to the intake manifold after the throttle plate with the help of a vacuum hose.
In case the throttle gets closed, the pressure difference caused by the drop of the pressure of the relative manifold operates the blow-off valve’s piston.
The excessive force or air is then either released into the atmosphere or recirculates into the non-pressurized end of the intake of the compressor inlet.
User Buying Considerations for the Best BOV for WRX
Now that you are aware of some of the best blow off valve WRX that are available in the market, you should also know the critical factors that you should consider while making a purchase.
Also, you might know by now that not all cars require a blow-off valve. It is only necessary if you have a turbocharged or supercharged engine vehicle.
However, you will always have some requirements in your mind for your blow-off valve, and to fulfill all your needs, and you will have to choose the appropriate blow-off valve.
Some of the most critical factors that you consider while buying an efficient blow-off valve are listed below;
Compatibility
As the blow-off valves are not universally compatible, you will have to do a little research on your own to choose the perfect one for your vehicle.
For this, you should look for the blow-off valves that promise compatibility with your vehicle’s brand and model.
Considering these factors, one could tell that compatibility is the primary factor you must consider while choosing and purchasing a blow-off valve.
Noise or Sound Level
Blow-off valves are known for the specific noise or sounds that they produce.
These are certain aggressive sounds in some cases that make heads turn towards your vehicle as you are driving down the road.
However, each product and brand will have a specific sound produced by the blow-off valve. Therefore, it is up to you what level of sound you desire from your blow-off valve.
Moreover, there are various blow-off valves available in the market that are referred to as quiet or silent blow-off valves that produce minimum or low sound.
So, it is essential to check the sound or noise level of your blow-off valve before making a purchase.
Size of the Valve
Different cars have different sizes of slots present for the installation of blow-off valves.
Although the most popular diameter of a blow-off valve is around 40 mm, this size might vary from vehicle to vehicle.
So, before choosing any blow-off valve for your car, it is essential to check what size valve will ideally fit your vehicle.
Matching the sizes of both the blow-off valve and the vehicle’s space where it is to be installed is very important as it helps avoid any inconvenience later.
Installation
While buying a blow-off valve for your vehicle, make sure that it is the one that ensures an easy or bolt-on installation.
As it is not a highly complex task, you might not want to go to professionals and get it done by paying money when you can easily do it.
Also, make sure that the product that you choose comes with easy instructions or a DIY guide to installing the blow-off valve.
Undoubtedly, this will be very helpful for you and thus is listed as one of the most important factors to consider.
Durable and Easy-to-Maintain
Durability is a factor that you should indeed consider while purchasing a blow-off valve for your vehicle.
As most of the products mentioned above are corrosion-resistant and are made out of high-quality materials, they ensure high durability and a longer lifespan.
This is a factor that you should indeed consider if you don’t want to keep on changing the blow-off valve on your vehicle repeatedly.
Moreover, maintaining the valve is also essential as it is exposed to daily wear and tear. So, look for a blow-off valve that is easy to maintain and doesn’t take much of your time and effort.
Conclusion
For your convenience, we have listed some of the best BOV for WRX that are of superior quality and high performance.
These products will indeed prove an excellent replacement for your turbocharged vehicle. It is only up to you what you are expecting from a blow-off valve and treatments for it.
Therefore, it is your choice to choose the appropriate blow-off valve that will provide you with the ideal noise or sound that you expect and perform efficiently.
Now, it is your turn to choose the best blow off valve WRX that will change the whole personality of your car.